Should regional nodes be included in whole breast RT for a favorable pT3N0 breast cancer after lumpectomy and SLNB?

I do not typically recommend RNI in a T3N0 following breast conserving surgery with negative SLN. While patient factors such as young age and pathologic factors ER-/Triple negative, LVSI concern me, they are not enough for me to offer RNI in a node negative patient.